Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7° N Lon: 74.8° W Elev: 1404 ft.

Overcast

77°F

25°C

Humidity 82%
Wind Speed NW 6 mph
Barometer 30.00 in (1015.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 1 Sep 4:56 pm EDT
Detailed forecast for

Sullivan County

Tonight
Mostly cloudy. A chance of showers and thunderstorms this evening, then a slight chance of showers after midnight. Lows in the lower 60s. East winds around 5 mph. Chance of rain 50 percent.
Wednesday
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Southeast winds around 5 mph. Chance of rain 40 percent.
Wednesday Night
Showers with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Lows in the lower 60s. South winds around 5 mph. Chance of rain near 100 percent.
Thursday
Showers likely. Humid with highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of rain 70 percent.
Thursday Night
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of showers. Lows in the lower 60s. Northwest winds around 5 mph.
Friday
Partly sunny. Highs in the upper 70s.
Friday Night
Mostly clear. Lows in the mid 50s.
Saturday
Mostly sunny. Highs in the mid 70s.
Saturday Night
Mostly clear. Lows in the lower 50s.
Sunday
Mostly sunny. Highs in the lower 70s.
Sunday Night
Mostly clear. Lows in the lower 50s.
Labor Day
Mostly sunny. Highs in the mid 70s.
Monday Night
Partly cloudy. Lows in the lower 50s.
Tuesday
Partly sunny. Highs in the mid 70s.



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335 PM EDT Tue Sep 1 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database